One option is to move your DNS ( not your domains, just your DNS ) to Cloudflare. There, you can run your DNS and set rules that allow for subdomain redirect the way you want.
Note that the free plan comes with 3 redirect rules. If you’re wanting to do more than that, you’ll need to get a paid plan.
Hey @yanaunghein, according to this article, Subdomain Forwarding should be doable with Google Domains. Have a look and let me know if this works for you.